builder/vmware: ESX artifacts have a different builder ID

This is so that things like vagrant post-processors and vsphere
post processors don't work.

builder/vmware/artifact.go

@@ -8,12 +8,13 @@ import (
 // Artifact is the result of running the VMware builder, namely a set
 // of files associated with the resulting machine.
 type Artifact struct {
-	dir string
-	f   []string
+	builderId string
+	dir       string
+	f         []string
 }
 
-func (*Artifact) BuilderId() string {
-	return BuilderId
+func (a *Artifact) BuilderId() string {
+	return a.builderId
 }
 
 func (a *Artifact) Files() []string {

builder/vmware/builder.go

@@ -16,6 +16,7 @@ import (
 )
 
 const BuilderId = "mitchellh.vmware"
+const BuilderIdESX = "mitchellh.vmware-esx"
 
 type Builder struct {
 	config config
@@ -463,7 +464,17 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		return nil, err
 	}
 
-	return &Artifact{b.config.OutputDir, files}, nil
+	// Set the proper builder ID
+	builderId := BuilderId
+	if b.config.RemoteType != "" {
+		builderId = BuilderIdESX
+	}
+
+	return &Artifact{
+		builderId: builderId,
+		dir:       b.config.OutputDir,
+		f:         files,
+	}, nil
 }
 
 func (b *Builder) Cancel() {